The Jewish holidays are not holy convocations from YHWH, and therefore are not commands that we have to follow. However, they still have a great Biblical significance, which is why Christian Torah keepers can also celebrate these feasts. In fact, I highly recommend celebrating these holidays, instead of a lot of our Christian pagan holidays, which do not even line up with YHWH's calendar.
Do Not Flatter Yourself
Why I Am Celebrating Hanukkah and not Christmas